Area of any circle = (pi) x (radius)2
Radius = 1/2 diameter
Area of this circle = (pi) x (2 ft)2 = 4 pi square feet = 12.566 square feet (rounded)
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A circle with a diameter of 4 mm has an area of : 12.57 mm2
24' 6"
If you mean a circle area than A = 63.61725 inch². Area A = pi times diameter² / 4.
No. The diameter of a circle (D) is twice the radius (r). Area = PI * r2 or PI*(D2/4)
area = pi x diameter squared/4 = 400 pi diameter squared = 4 x 400 x pi/pi = 1600 diameter = sqrt 1600 = 40